Vaporizing attachment for internal-combustion engines



1 1927. Feb 5 E. RYDER VAPORIZING ATTACHMENT FOLINTERNAL COMBUSTIONENGINES Filed Aug'. 19. 1926 rllln Patented Feb. l5, 1.927.

UNITED STATES `PATENT OFFICE.

ELMER RYDER, OF ELGIN, ILLINOIS. l

' 'VAIPORIZING- ATTACHMENT FOR INTERNAL-COMBUSTION ENGINES.

Application filed August 19, 1926. Serial No. 130,156.

In the operation of automobile engines, socalled wet pockets form in theintake manifolds, due to the dropping out of the gas streams of theheavier unvaporized particles of the liquid fuel. This is especiallynoticeable with low grade or cheap fue s, and also when the manifold iscold as when first starting the engine. Manifolds, as heretofore used,have had no way to clear them of these deposits of unvaporized fuel,

with the result -that some, if not a greater' portion o-f this fuel ndsits way into. the

crank case past the. engine pistons to dilute` the crank case oil, witha consequent thinning of the lubricant and injuring the wearing parts ofthe motor. Even after the engine has warmed up and running, the heav- Aier particles of unvaporized fuel continue' to drop vout of the gas'stream'and collect in the manifold to do injury as stated.`

One object of my invention is to provide means in connection with themanifold to free or clear itl continually of the liquid fuel particleswhichvare deposited therein from the passing gas streams, and thus avoidthe formation of wet pockets to do injury to the motor as heretofore.

A further object of my invention 1s to continuously feed this depositedliquid fuel back into the manifold under a pressure greater than that inthe manifold, so as to finely atomize the liquids and cause them Vto,

readily and quickly vaporize for use in the gas supply, and thusincrease the etiiciency of theen'gine.

` Another object of my4 invention 'is toprovide means whereby thepres/sure at which the collected- `liquid is discharged into themanifold may be regulated, and thus enable the mechanism to be set forfuels o'f different grades.

The invention consists further in the matters hereinafter described andclaimed. 4

In the accompanying drawings Fig. 1 is a view of an intake'manifold, invertical section, and showing applied theretothe assembly of myinvention; andl Fig. 2 is an enlarged vertical sectional view throughthe discharge nozzleof the assembly and associated portion ofthemanifold.

' In the drawings, I have shown an intake manifold 1 of a type designedfor a four cylinder motor. it being of course understood that myinvention can. readily be applied to manifolds of other types. Themogravity to said walls from the gas streams passing through themanifold.

These depressions form pockets, and 'tapped into the bottom of .each oneis an out. let .pipe 6. The pipes from the several pockets ordepressions 5 lead to a common collecting fitting 7 preferably locatedbelow the lowermost point of the manifold, so that the liquid fuelcollected in the pockets may drain .by gravity into said fitting. Thelatter has a downwardly extending outlet pipe 8,- which connects withthe intake of a mechanical forcingv means '9, whichmayA be in the formof a lgear pump.- The intke of` the pump -is below the fitting 7 so4 `asto be 'supplied `with liquids thereby. The outlet ofthe pump isconnectedby a pipe 10 to a nozzle 11 located in the manifold 1 atapoint' between the intake ports2 of the engine and the throttle valve 4,as shown in Fig. 1. f v

The nozzle 11 is arranged to discharge toward the intake ports 2, andhas a valve 12 atV itsl discharge end, as shown in Figs.' 1

and 2. lThis valve, .as shown in Fig. 2, is of the poppct `type andl isdesigned .to seat against the upper end of the nozzle, which ismadetapered for the purpose.v The stem' 13 of the valve extends downwardthro-ugh the lower portion of the nozzle casing and is threaded toreceive a nut' 14 for adjusting the tension of .a'coil spring'surroundf` ing ythe lower part of the lstem between the nut and theunder sideof the nozzle casing, as clearly shown in Fig. 2. By adjustingthe tension ofthe spring through the'turning of the'nut up or down thestem, the valve may be set to regulate' the pressure at which theliquids'are discharged from the nozzle into the manifold.V

'The'operation lof the assembly is as follows: A mixture of air andliquid fuel, the latter being supplied by the carbureter, is drawn intothe manifold 1 on the suction strokes of the pistons'in the enginecylinders.

All of the liquid fuel picked up by the air stream at thecarbureter'does not sufficiently mix with `the air to be vaporizedthereby, and consequently a certain percentage of the liquids is carriedin suspension in the airv and, lbeing heavier, drops out of tl1e"`a'irstream before reaching theengine cylinders. This liquid collects on theinner walls of the manifold and drains toward the lowermost point of thelatter. By the provision of the pockets 5, 5 in the path of this drain,the depositedliquids'collect in these pockets and vflow out of the sameto the pump 9 kthrough the piping shown. The pump is oper-ated either bythe engine or at the same time-as 'the engine, if a' separate source ofpower is used, and discharges the collected liquids back into themanifold under a fairly high presure as compared to that in the manifolIn having the p-ump discharge the liquids into the manifold underpressure, the discharged liquids will be broken up into finerparticlesthan .at the feed nozzle of the carbureter and vaporize muchmore readily and thoroughly. In this way the heavier liquid particles,whichnaturally dropout of the gas streams passing through the manifold,are returned to the manifold under vpressure and vaporized to increasethe efficiency of the engme. Moreover, the manifold is keptsubstantially free of the heretofore objectionable wet pockets, therebyminimizing crank case dilution. Furthermore, by collecting the depositedliquids from the manicharging the liquid fuel collected from themanifold atla greater pressure than that in the manifold, will causeanvimmediate vaporization ofthe injected fuel and thus permit quickerstarting of the en 'ne regardless of how cold the motor may'ieJ y Inorder to assemble the nozzlel 11'v in the manifold 1 and also reach thenozzle for adlustment from time to timeyas may be required, I provide inone side of the upright portion of the 'manifold an opening Y16 throughwhich the nozzle may be inserted and removed fn disconnection of theunion 17 between the nozzle and the feed pipe 10. A plate 18 is clampedover the opening 16 to close the same. This plate supports the nozzle inthe manifold 1 in the manner shown.

. While I have shown my invention applied to an intake manifold, it maTbe applied to any conduit through which a combustible mixture, as liquidfuel and air,is supplied to a motor. Moreover, the details of structureand arrangement of parts may be variously changed and modified withoutdeparting from the spirit and scope of my invention.

I claim as my invention:

1. In an internal combustion engine, the combination with a fuel intakeconduit through Whiclr'a mixture of combustible liquid fuel and air issupplied to the engine,

of means in the conduit for collecting thev unvaporized liquid fuelparticles dropped from the mixture, and means including a pump forremoving the collected liquids from the conduit and for discharging thesame" back into the conduit under lpressure for causing thevaporiz'ationof said liquids.

2. In-an internal'combustion engine, the combination with a fuel intake.conduit through which-a mixture of combustible liquid fuel and air issupplied to the engine, of means in the conduit for collecting theunvaporized liquid fuel particles dropped from the mixture, meansincluding a pump for removing the collected liquids from the conduit andfor'discharging the same back into the conduit under pressure forcausing the vaporization of said liquids, and means for regulating thepressure at which` said liq-` uids are discharged into the conduit. 4 3.In an lnternal combustion engine, the combination with an intakemanifold, of

pockets in the lower walls of the manifold for collecting theunvaporized liquid fuel particles` dropped from the gas mixture passingthrough the manifold, outlet pipes tapped into said pockets, a nozzle insaid manifold,-and a force pump connected with said pipes and nozzle,respectively, for' removing the liquids from said pockets anddischarging the same into said conduit unyder pressure through saidnozzle.

4.- In an internal combustion engine, the. combination with an intakemanifold, of pockets in the lower Walls of the manifold for collectingthe unvaporized liquid fuel particles dropped from the gas mixturepassing `through the manifold, outlet pipes tapped into said pockets, anozzle in said manifold, a force pump connected with said pipes andnozzle, respectively, for removing the liquids from said ockets anddischarg-v ing the same into said sure through said nozzle, and a valvefor regulating the pressure vat whichthe liquids are discharged fromsaid nozzle.

.5. In an internal combustion engine, the combination with an intakemanifold, of

pockets in the lower Walls of the manifoldfor collecting the unvaorizedliquid fuel partlcles droppedfrom t e gas mixture passconduit4under presv ing through the manifold, outlet pipes ing an opening atthe nozzle for the passage tapped into said nozzle, a nozzle in said ofthe same therethrough, and a cover plate manifold, a force pumpconnected with said' for said opening and supporting said nozzle. '10pipes and nozzle, respectively, for removing In testimony whereof I aixmy signature 5 the liquids from said pockets and dischargthis 16 day ofAugust, 1926.

ing the same into said conduit under pressure through said nozzle, saidmanifold hav- ELMER RYDER.

